Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 68 | 99 | 119 | 93 | 118 | 115 |
| Tmin | 78 | 93 | 120 | 93 | 117 | 117 |
| Διάρκεια Ηλιοφάνειας | 288 | 268 | 262 | 272 | 301 | 263 |
| Υετός | 106 | 114 | 124 | 121 | 125 | 121 |
| Υγρασία/Ορατότητα | 101 | 108 | 118 | 91 | 119 | 118 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 122 | 115 | 100 | 81 | 70 | 92 |
| Tmin | 119 | 114 | 97 | 81 | 83 | 91 |
| Διάρκεια Ηλιοφάνειας | 305 | 303 | 321 | 292 | 247 | 265 |
| Υετός | 127 | 126 | 121 | 122 | 123 | 123 |
| Υγρασία/Ορατότητα | 121 | 118 | 112 | 113 | 114 | 121 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |
